The atoll is 21.5 km in length with a maximum width of 8 km and is located only 3 km to the south of Chuuk's southernmost point.
There are 2 small islands and two islets with a total area of 0.5 km² on its reef.[2] Givry, also known as Feneppi, the largest island, is located at the northern end of the atoll. Kuop is uninhabited; administratively it belongs to Uman municipality.